const zhanghu = document.getElementById("zhanghu");
const zhul = document.querySelector(".zhul");
zhanghu.onmouseenter = function(){
    console.log("yiru");
    zhul.style.display = "block";
    
}
zhanghu.onmouseleave = function(){
    console.log("yichu");
    zhul.style.display = "none";
}


